It's been discussed on the Enforcer board : http://forums.anarchy-online.com/sho...&threadid=5918

When a layer damage shield nano is buffing you, Rage will not be able to trigger a root breaking, since the shield absorbs the Rage damages.

It's maybe not a bug, and it may be intended to work that way. Still it's dubious and we would be glad to have an official answer on this one.

Thanks ~~